Wyoming Snow Precipitation Update
United States Natural Resources Water and Climate Center
Department of Conservation Portland, Oregon
Agriculture Service
S N O W - P R E C I P I T A T I O N U P D A T E
Based on Mountain Data from NRCS SNOTEL Sites
As of SATURDAY: DECEMBER 11 , 2010
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 7.3 5.4 135 10.0 7.6 132
COTTONWOOD CREEK 7670 10.9 6.3 173 14.9 9.8 152
GRAND TARGHEE 9260 18.7 -M * 14.0 -M *
GRANITE CREEK 6770 6.9 4.7 147 9.4 6.8 138
GRASSY LAKE 7265 11.2 9.9 113 14.4 12.0 120
GROS VENTRE SUMMIT 8750 6.4 4.9 131 6.5 5.0 130
GUNSIGHT PASS 9820 6.7 -M * 7.0 -M *
LEWIS LAKE DIVIDE 7850 12.7 10.0 127 14.9 12.4 120
PHILLIPS BENCH 8200 12.0 8.5 141 13.5 9.4 144
SALT RIVER SUMMIT 7760 5.4 3.5 154 9.0 6.2 145
SNAKE RIVER STATION 6920 6.0 5.4 111 10.9 8.0 136
SPRING CREEK DIVIDE 9000 11.7 8.8 133 12.7 9.2 138
THUMB DIVIDE 7980 7.6 5.2 146 8.6 6.6 130
TOGWOTEE PASS 9580 11.7 8.5 138 12.7 8.9 143
TWO OCEAN PLATEAU 9240 14.8 10.0 148 11.7 10.0 117
WILLOW CREEK 8380 11.3 9.9 114 16.3 11.4 143
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Basin wide percent of average 135 134
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 9.2 8.5 108 9.2 7.3 126
BLACK BEAR 8170 15.1 12.3 123 16.6 12.8 130
CANYON 7870 6.0 4.2 143 7.1 5.8 122
FISHER CREEK 9100 12.7 11.9 107 13.3 12.2 109
MADISON PLATEAU 7750 9.4 7.9 119 11.4 9.1 125
NORTHEAST ENTRANCE 7350 3.6 3.4 106 5.8 4.9 118
PARKER PEAK 9400 10.0 8.0 125 10.7 6.5 165
SYLVAN LAKE 8420 7.8 7.8 100 10.5 8.5 124
THUMB DIVIDE 7980 7.6 5.2 146 8.6 6.6 130
TWO OCEAN PLATEAU 9240 14.8 10.0 148 11.7 10.0 117
WHISKEY CREEK 6800 5.9 5.1 116 8.7 7.2 121
WHITE MILL 8700 9.2 8.3 111 10.4 9.6 108
WOLVERINE 7650 5.0 3.9 128 5.4 5.4 100
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Basin wide percent of average 121 122
WIND RIVER
BURROUGHS CREEK 8750 -M 5.0 * 5.9 5.9 100
CASTLE CREEK 8400 2.4 -M * 3.1 -M *
COLD SPRINGS 9630 3.4 3.7 92 3.4 4.7 72
DEER PARK 9700 8.6 5.2 165 9.5 8.3 114
HOBBS PARK 10100 6.5 6.3 103 5.7 5.2 110
LITTLE WARM 9370 4.6 4.2 110 4.6 5.3 87
SOUTH PASS 9040 6.8 6.4 106 6.2 7.2 86
ST. LAWRENCE ALT 8620 2.0 3.1 65 2.9 3.9 74
TOGWOTEE PASS 9580 11.7 8.5 138 12.7 8.9 143
TOWNSEND CREEK 8700 3.5 3.5 100 5.3 5.1 104
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Basin wide percent of average 115 103
BIGHORN BASIN
BALD MTN. 9380 7.7 7.0 110 6.4 6.3 102
BEAR TRAP MEADOW 8200 1.8 2.0 90 3.0 3.8 79
BLACKWATER 9780 10.7 9.5 113 10.0 8.6 116
BONE SPRINGS DIV 9350 5.6 6.0 93 4.4 5.7 77
EVENING STAR 9200 11.1 10.5 106 12.7 9.8 130
GRAVE SPRINGS 8550 2.8 3.0 93 3.4 4.0 85
KIRWIN 9550 5.5 4.9 112 5.9 4.7 126
MARQUETTE 8760 1.3 4.2 31 2.7 4.5 60
MIDDLE POWDER 7760 4.3 4.1 105 2.8 5.6 50
OWL CREEK 8975 1.6 2.2 73 2.0 2.4 83
POWDER RIVER PASS 9480 4.5 3.9 115 5.3 4.7 113
SHELL CREEK 9580 5.5 5.7 96 4.6 5.2 88
SYLVAN LAKE 8420 7.8 7.8 100 10.5 8.5 124
SYLVAN ROAD 7120 4.8 4.5 107 7.4 8.1 91
TIMBER CREEK 7950 1.7 2.5 68 2.2 3.3 67
YOUNTS PEAK 8350 7.0 5.9 119 6.4 6.1 105
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Basin wide percent of average 100 98
SHOSHONE RIVER
BLACKWATER 9780 10.7 9.5 113 10.0 8.6 116
EVENING STAR 9200 11.1 10.5 106 12.7 9.8 130
KIRWIN 9550 5.5 4.9 112 5.9 4.7 126
MARQUETTE 8760 1.3 4.2 31 2.7 4.5 60
SYLVAN LAKE 8420 7.8 7.8 100 10.5 8.5 124
SYLVAN ROAD 7120 4.8 4.5 107 7.4 8.1 91
YOUNTS PEAK 8350 7.0 5.9 119 6.4 6.1 105
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Basin wide percent of average 102 111
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.8 2.0 90 3.0 3.8 79
BIG GOOSE 7990 1.9 3.0 63 3.4 3.6 94
BONE SPRINGS DIV 9350 5.6 6.0 93 4.4 5.7 77
BURGESS JUNCTION 7880 2.8 4.0 70 4.2 4.8 88
CLOUD PEAK RESERVOIR 9860 5.3 4.3 123 5.6 5.4 104
DOME LAKE 8880 2.3 4.7 49 4.3 5.6 77
GRAVE SPRINGS 8550 2.8 3.0 93 3.4 4.0 85
HANSEN SAWMILL 8360 1.6 2.5 64 2.3 3.6 64
LITTLE GOOSE 8870 2.5 -M * 5.9 -M *
MIDDLE POWDER 7760 4.3 4.1 105 2.8 5.6 50
POWDER RIVER PASS 9480 4.5 3.9 115 5.3 4.7 113
SOLDIER PARK 8720 1.4 -M * 3.0 -M *
SUCKER CREEK 8880 3.8 3.7 103 4.0 5.2 77
TIE CREEK 6870 1.7 1.4 121 3.3 4.2 79
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Basin wide percent of average 90 82
BELLE FOURCHE
BLIND PARK 6890 1.7 2.2 77 7.1 5.0 142
COLE CANYON 5910 2.3 2.5 92 4.4 3.3 133
NORTH RAPID CREEK 6130 2.4 2.2 109 6.0 4.3 140
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Basin wide percent of average 93 139
UPPER N. PLATTE RIVER
COLUMBINE 9160 10.3 6.5 158 13.6 8.0 170
DIVIDE PEAK 8880 6.9 6.3 110 10.5 7.5 140
ELK RIVER 8700 5.8 4.3 135 9.3 6.4 145
JOE WRIGHT 10120 10.8 7.3 148 15.6 9.1 171
NORTH FRENCH CREEK 10130 15.1 9.6 157 15.6 8.9 175
OLD BATTLE 10000 14.0 11.0 127 15.9 11.5 138
SAGE CREEK BASIN 7850 4.1 3.7 111 7.2 4.3 167
SOUTH BRUSH CREEK 8440 6.4 3.6 178 9.7 6.0 162
TOWER 10500 18.7 15.3 122 20.8 13.0 160
WEBBER SPRINGS 9250 9.0 8.3 108 13.3 9.5 140
WILLOW CREEK PASS 9540 6.7 4.3 156 7.7 5.1 151
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Basin wide percent of average 134 156
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 9.6 7.5 128 11.2 7.5 149
CASPER MTN. 7900 3.4 5.4 63 6.2 6.0 103
DEADMAN HILL 10220 5.4 5.9 92 10.6 6.1 174
DEER PARK 9700 8.6 5.2 165 9.5 8.3 114
LAPRELE CREEK 8375 3.2 3.9 82 4.7 4.9 96
RENO HILL 8400 4.7 5.1 92 6.4 5.8 110
ROACH 9700 7.0 5.3 132 9.6 6.3 152
SAND LAKE 10050 13.8 11.2 123 13.4 8.6 156
SOUTH PASS 9040 6.8 6.4 106 6.2 7.2 86
WINDY PEAK 7900 2.6 2.8 93 5.0 4.3 116
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Basin wide percent of average 111 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.4 2.4 142 5.8 5.3 109
DIVIDE PEAK 8880 6.9 6.3 110 10.5 7.5 140
OLD BATTLE 10000 14.0 11.0 127 15.9 11.5 138
SANDSTONE RS 8150 3.1 3.2 97 9.1 6.6 138
WHISKEY PARK 8950 5.3 7.6 70 13.8 9.6 144
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Basin wide percent of average 107 136
UPPER GREEN RIVER
BIG SANDY OPENING 9080 5.3 5.0 106 6.2 5.1 122
BLIND BULL SUM 8650 10.2 9.1 112 7.4 8.1 91
EAST RIM DIVIDE 7930 4.2 4.1 102 4.6 4.2 110
ELKHART PARK G.S. 9400 4.1 4.4 93 4.8 5.2 92
GROS VENTRE SUMMIT 8750 6.4 4.9 131 6.5 5.0 130
GUNSIGHT PASS 9820 6.7 -M * 7.0 -M *
KENDALL R.S. 7740 4.0 4.3 93 5.9 4.9 120
LOOMIS PARK 8240 6.4 5.6 114 7.3 6.0 122
NEW FORK LAKE 8340 4.1 3.7 111 4.2 4.5 93
POCKET CREEK 9360 4.5 -M * 5.6 -M *
SNIDER BASIN 8060 7.0 4.7 149 8.0 5.6 143
SPRING CREEK DIVIDE 9000 11.7 8.8 133 12.7 9.2 138
TRIPLE PEAK 8500 10.4 8.2 127 12.5 8.0 156
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Basin wide percent of average 118 122
LOWER GREEN RIVER
HAMS FORK 7840 4.7 3.4 138 5.8 4.3 135
HEWINTA 9519 2.8 2.7 104 6.6 5.7 116
HICKERSON PARK 9145 1.4 1.9 74 3.5 3.6 97
HOLE-IN-ROCK 9150 1.6 1.8 89 3.9 3.3 118
INDIAN CREEK 9425 11.8 8.6 137 11.4 8.7 131
KELLEY R.S. 8180 7.5 5.4 139 10.0 7.1 141
STEEL CREEK PARK 10200 4.7 4.9 96 7.9 6.0 132
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Basin wide percent of average 120 127
UPPER BEAR RIVER
BUG LAKE 7950 8.6 5.3 162 11.4 6.9 165
HAYDEN FORK 9212 5.6 4.0 140 11.9 7.4 161
KELLEY R.S. 8180 7.5 5.4 139 10.0 7.1 141
LILY LAKE 9156 6.1 3.7 165 9.1 6.7 136
MONTE CRISTO 8960 11.2 6.9 162 13.8 8.9 155
SALT RIVER SUMMIT 7760 5.4 3.5 154 9.0 6.2 145
TRIAL LAKE 9992 11.2 7.1 158 13.2 8.2 161
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Basin wide percent of average 155 153
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
If the Basin wide percent of average value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the average value for those sites on this day.
Contact your state water supply staff for assistance.
Reference period for average conditions is 1971-2000.
Provisional data, subject to revision.
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.